Bactericidal beta-lactam that inhibits cell wall synthesis. Second-generation spectrum bridges gram-positive (first-gen) and gram-negative (third-gen) coverage. More active against H. influenzae and Moraxella than first-generation cephalosporins.
At a glance
Class
Second-Generation Cephalosporin
Storage
Capsules at room temperature; suspension refrigerated, use within 14 days
Dosing
Used for skin, soft tissue, respiratory, and urinary tract infections
Educational reference only
This information is provided for educational purposes and is not a substitute for professional veterinary advice, diagnosis, or treatment. Always consult a qualified veterinarian before administering any medication to your pet.
Find a vet near you →Safety
Clinical response at 3–5 daysCulture and sensitivity
Educational reference only
This information is provided for educational purposes and is not a substitute for professional veterinary advice, diagnosis, or treatment. Always consult a qualified veterinarian before administering any medication to your pet.
Find a vet near you →Interactions
No documented interactions.
FAQs
Frequently asked questions
›What is Cefaclor?
Cefaclor is a second-generation cephalosporin used in pets. Bactericidal beta-lactam that inhibits cell wall synthesis. Second-generation spectrum bridges gram-positive (first-gen) and gram-negative (third-gen) coverage. More active against H. influenzae and Moraxella than first-generation cephalosporins.
›What is Cefaclor used for in pets?
Cefaclor is used in veterinary medicine for: Used for skin, soft tissue, respiratory, and urinary tract infections; Limited feline data.
›What is the Cefaclor dose for dogs?
For dogs, Cefaclor is typically dosed as follows — Used for skin, soft tissue, respiratory, and urinary tract infections: 4–20 mg/kg PO q8h. Always consult your veterinarian for a dose tailored to your pet's weight, age, and condition.
›What is the Cefaclor dose for cats?
For cats, Cefaclor is typically dosed as follows — Limited feline data: 10–15 mg/kg PO q8h. Always consult your veterinarian for a dose tailored to your pet's weight, age, and condition.
›Does Cefaclor need a prescription?
Yes. Cefaclor is a prescription medication and should only be administered under veterinary supervision.
Educational reference only
This information is provided for educational purposes and is not a substitute for professional veterinary advice, diagnosis, or treatment. Always consult a qualified veterinarian before administering any medication to your pet.
Find a vet near you →References
References
The PetCare.AI drug reference is built from 13 authoritative sources cited across 580 drug monographs.
Textbooks & handbooks — 5
- Plumb's Veterinary Drug Handbook
- Withrow & MacEwen's Small Animal Clinical Oncology
- Merck Veterinary Manual
- NRC Nutrient Requirements of Dogs and Cats
- Veterinary Pharmacology and Therapeutics (Riviere & Papich)
Clinical guidelines & consensus — 4
- ASPCA Animal Poison Control Center Guidelines
- AAHA Diabetes Management Guidelines
- ASPCA Poison Control Guidelines
- RECOVER CPR Guidelines
Journals & peer-reviewed studies — 2
- EPIC Study (J Vet Intern Med 2016)
- JVIM FAT CAT Study
Regulatory & approvals — 1
- CDSCO Veterinary Drug Approval Registry (1969–2026)
Databases — 1
- Washington State University VCPL MDR1 Database